Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.232.95-3.07
1
7.18
👆🏻
Fracture
Conchoidal, Uneven, Conchoidal to uneven
Conchoidal
Cleavage
[0001] indistinct, [1010] indistinct
Perfect on {110} at 56° and 124°; partings on {010} and {100}
Mohs Hardness
55-6
2
10
👆🏻
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.